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Statements of Cash Flows - Summary of Changes in Liabilities Arising From Financing Activities (Details) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure Of Cash Flow Statement [Abstract]
Beginning of the year	₩ 5,963	₩ 8,730	₩ 5,900
Cash flows used in financing activities – Payment of lease liabilities	(4,083)	(3,918)	(3,648)
Cash flows from operating activities – Interest paid	(157)	(122)	(111)
Non-cash transactions
Acquisitions – leases	4,358	1,209	6,055
Interest expense relating to lease liabilities (included in finance cost)	157	122	111
Others	260	(124)	0
Translation difference	64	66	423
Ending of the year	₩ 6,562	₩ 5,963	₩ 8,730

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The amount of additions to investment property resulting from acquisitions. [Refer: Investment property]

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The increase (decrease) in liabilities arising from financing activities resulting from financing cash flows. [Refer: Cash flows from (used in) financing activities; Liabilities arising from financing activities]

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The amount of interest expense on lease liabilities. [Refer: Lease liabilities]

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The amount of liabilities for which cash flows were, or future cash flows will be, classified in the statement of cash flows as cash flows from financing activities. [Refer: Cash flows from (used in) financing activities; Liabilities]

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The amount of reclassification adjustments related to exchange differences when the financial statements of foreign operations are translated, net of tax. Reclassification adjustments are amounts reclassified to profit (loss) in the current period that were recognised in other comprehensive income in the current or previous periods. [Refer: Other comprehensive income]

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